Chromotography and formulations Flashcards
What is a mixture?
A mixture is two or more chemical elements or compounds which are together however aren’t chemically combined. They can be separated.
What is chromatography?
A method of separation and analysis of a mixture of soluble chemical substances.
What is retention factor?
Retention factor= distance from base line to spot/ distance from base like to solvent front
*Tip- Rf should be a decimal, if <1 then probably wrong
What are the control variables in chromatography test?
Size of dot
Water level/depth
Line is straight/level
Solvent type
What is the independent variable in chromatography test?
Pen
What is the dependent variable in a chromatography test?
Distance ink travels
Rf value
What is a formulation?
Formulations are mixtures that have been designed as a useful product
